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Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: CONVERSATION VI. Of the Hydrostatic Bellows. FA THER. I think we have made it sufficiently clear that the pressure of fluids of the same kind is always proportional to the area of the base multiplied into the perpendicular height at which the fluid stands, without any regard to the form of the vessel, or the quantity of fluid contained in it. Emma. I cannot help saying, that it still appears very mysterious to me, that a pint of water (Fig. 11.) should have an equal pressure with VOL. III. G the 20 pints in the next vessel. You will not say that one pint weighs as much as the 20. Father. Your objection is proper. The pressure of the water upon the bottom c, c, does not in the least alter the weight of the vessel and water con- sidered as one mass; for the action and re-action, which cause the pressure, destroy one another with respect to the weight of the vessel, which is as much sustained by the action upwards, as it is pressed by the re-action downwards. The pressure of water and other fluids differs from the gravity or weight in this respect; the weight is according to the quantity; but the pressure is according to the perpendicular height Charks. Suppose both vessels were filled with any solid substance, would the effect produced be very different? Father. If the water were changed into ice, for instance, the pressure upon the bottom of the smaller vessel would be.much less than that upon the larger. Here is another instrument (Fig. 13.) to show you that a very few ounces of water will lift up and sustain a large weight, Emma. What is. the instrument called ? Father. It is made like common bellows, only without valves, and writers have given it the name of the hydrostatic bellows. Thb small tin-pipe e o p communicates with the inside of t...
| ISBN-13 | 9780217547024 |
|---|---|
| ISBN-10 | 0217547028 |
| Weight | 0.30 Pounds |
| Dimensions | 9.00 x 6.00 x 0.20 In |
| List Price | $14.14 |
| Format | Paperback |
|---|---|
| Pages | 84 pages |
| Publisher | |
| Published On | 2009-08-01 |
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